Primary Ewing's sarcoma of the calvarial skull.

Primary Ewing's sarcoma of the calvarial skull was diagnosed in a 10-years-old girl. Detailed angiographical investigations were performed in this large tumor, and although the larger part of the neoplasm was supplied by the external carotid artery, an unusual feature was the presence of a very thick arterial feeder, originating from the left callosomarginal artery. The tumor was radically resected. Adjuvant chemotherapy was given, and no recurrence or metastasis occurred during two years, after which the girl was lost for follow-up.